incur
Word family
- incurredadjectiveB2
- incurringverbB2
- incurrencenounC1
Synonym discussion
Sense: verb/1
All five words describe experiencing something undesirable, but they differ in register, scope, and typical objects. 'Incur' is the most formal and business-oriented — you incur costs, debts, or penalties as a direct result of a choice. 'Suffer' is broader and less formal: you can suffer a loss, pain, or humiliation even from events beyond your control. 'Sustain' is highly formal and largely restricted to injury and financial loss ('sustain heavy casualties'). 'Contract' has a legal or medical flavour: you contract a disease or a legal obligation. 'Run up' is the only informal option, used almost exclusively for debts and bills ('run up a huge credit card balance'). In formal writing, choose 'incur' for consequences tied to your own actions; choose 'sustain' for passive damage; choose 'suffer' when the cause may be external.
Common collocations
Etymology
From Latin 'incurrere' — literally 'to run into' (in- 'into' + currere 'to run'). The word entered Middle English via Old French 'encourir', keeping the image of 'running into' something, which gradually narrowed to running into trouble or obligation.